【fuzz】hiredis --sanitizer memory Uninitialized bytes in __interceptor_strlen at offset 0 inside [0x7ffc6b0ca370, 1)

环境信息】
x86
【测试版本】
Name: hiredis
Version: 1.0.2

【注意事项】
受影响版本排查（受影响/不受影响）
1、master
2、openEuler-20.03-LTS-SP3
3、openEuler-20.03-LTS-SP1
4、openEuler-20.03-LTS-SP2
5、openEuler-20.03-LTS
6、openEuler-21.03
7、openEuler-20.03-LTS-Next
8、openEuler-21.09
9、openEuler-22.03-LTS
10、openEuler-22.03-LTS-Next
11、openEuler-20.09
12、openEuler-22.03-LTS-SP1
13、openEuler-23.03
一、【测试步骤】
1、编译
python3 infra/helper.py build_fuzzers --sanitizer memory hiredis
2、执行
python3 infra/helper.py run_fuzzer hiredis format_command_fuzzer
【报错信息】
Uninitialized bytes in __interceptor_strlen at offset 0 inside [0x7ffc6b0ca370, 1)
==12==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x52fb17 in sdscat /src/hiredis/sds.c:394:28
    #1 0x530add in sdscatvprintf /src/hiredis/sds.c:535:9
    #2 0x520649 in redisvFormatCommand /src/hiredis/hiredis.c:456:34
    #3 0x5228cb in redisFormatCommand /src/hiredis/hiredis.c:554:11
    #4 0x51e7d8 in LLVMFuzzerTestOneInput /src/hiredis/format_command_fuzzer.c:51:9
    #5 0x4583b1 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:556:15
    #6 0x457af5 in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool*) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:470:3
    #7 0x459bc7 in fuzzer::Fuzzer::MutateAndTestOne() /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:698:19
    #8 0x45a645 in fuzzer::Fuzzer::Loop(std::__Fuzzer::vector<fuzzer::SizedFile, fuzzer::fuzzer_allocator<fuzzer::SizedFile> >&) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:832:5
    #9 0x44961e in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:826:6
    #10 0x471df2 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:19:10
    #11 0x7fd27c08a82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
    #12 0x41dd28 in _start (/out/format_command_fuzzer+0x41dd28)

Uninitialized value was created by an allocation of 'staticbuf' in the stack frame of function 'sdscatvprintf'
    #0 0x5306d0 in sdscatvprintf /src/hiredis/sds.c:503

SUMMARY: MemorySanitizer: use-of-uninitialized-value /src/hiredis/sds.c:394:28 in sdscat
Exiting
MS: 5 InsertByte-InsertByte-CrossOver-ChangeByte-ChangeBit-; base unit: 84b38958c642458f7cc9f0f099b795e268275028
0x3d,0x2d,0xa,0x2,0x25,0x2e,
=-\x0a\x02%.
artifact_prefix='./'; Test unit written to ./crash-777b8c637ff1536e988f7d11a593d34bfa292cf4
Base64: PS0KAiUu

【预期结果】
运行无异常

【实际结果】
运行出现异常

【复现步骤】
python3 infra/helper.py reproduce hiredis format_command_fuzzer ./crash-777b8c637ff1536e988f7d11a593d34bfa292cf4

src-openEuler/hiredis

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